Which will be changed by (rare) gems and socket bonuses:Let's say that Crystalforge Greaves will be socketed with Inscribed Noble Topaz so you will benefit from the +2 Str socket bonus.+0,18% crit chance+6 Strength / 13,2 Attack Power*

Let's say that Lightbringer Greaves will be socketed with Bold Living Ruby so you will benefit from the +2 hit socket bonus.+8 Strength / 17.6 Attack Power*

+11 Strength (24.2 AP)

+6 Stamina

-1 Intellect

+0.46% crit chance

-19 hit

So you lose a bit of hit rating and a mere 15 mana. The loss of hit rating will most likely not be a problem, since the hit cap (when speccing Precision for +3% hit) is at 95. This will probably already be reached by your other gear. Unless you have an equip which lacks +hit of course, but I think this will not be the case. There are also more efficient ways to compensate for the loss of +hit rating than to equip tier 5 pants instead of tier 6 pants.* Note that the strength to attack power formula is:Strength x 1.1 x 2 = APThis is because of the Divine Strength talent, which increases the total amount of strength by +10%.